Cantilever beam welding connection structure capable of reducing influence of welding temperature effect on chemical anchor bolt colloid

Abstract

The utility model discloses a cantilever beam welding connection structure capable of reducing the influence of the welding temperature effect on chemical anchor bolt colloid. The cantilever beam section is welded on the anchor plate in advance, the cantilever beam is prevented from being directly welded on the anchor plate which is connected with the chemical anchor bolt, and the cantilever beam section is coated with the wet towel soaked with ice water during welding, so that the adverse effect of the high temperature effect on the colloid of the chemical anchor bolt in the welding process is greatly reduced, and the service life of the chemical anchor bolt is prolonged. And the existing structural concrete is prevented from being burnt by high temperature, reliable connection between the cantilever beam and the existing structural member is achieved, the method is efficient, safe and reliable, and great social benefits and economic benefits are obtained.

Description

Technical Field

[0001] The utility model relates to an elevator pit structure, in particular to a cantilever beam welding connection structure capable of reducing the influence of welding temperature on chemical anchor colloid. Background Art

[0002] Reinforcement and renovation are very common in building structure engineering, especially with the large-scale development of urban renewal and the upgrading and renovation of existing buildings, a large number of engineering reinforcement projects have been generated.

[0003] Chemical anchors are a convenient and fast way to connect steel structures to existing concrete structures and are widely used in reinforcement and renovation projects. However, the most critical component of a chemical anchor is the anchor colloid, which is crucial for its proper function.

[0004] The conventional method of connecting cantilever steel beams to existing concrete components is to first anchor the anchor plate to the existing concrete structural component through chemical anchor bolts, and then weld the steel structural component to the anchor plate. The high welding temperature during the welding process will cause a significant decrease in the performance of the anchor bolt colloid, seriously affecting the working performance of the anchor bolt. It must be treated with caution, otherwise it will cause a major safety accident.

[0005] In response to the above situation, many engineering and technical personnel have developed many methods to try to reduce the adverse effects of temperature on anchor colloids during welding. Each method has its own characteristics and scope of application, and all need to be optimized based on the characteristics of the steel structure components to be connected and the chemical anchors. Utility Model Content

[0006] In order to solve the technical problems existing in the known technology, the utility model provides a cantilever beam welding connection structure that reduces the influence of welding temperature on chemical anchor colloid. It can achieve the purpose of reliable connection between the cantilever steel beam and the existing concrete structure member while reducing the influence of welding temperature on chemical anchor colloid as much as possible, with high efficiency and low cost.

[0007] The utility model adopts a technical solution to solve the technical problems existing in the known technology: a cantilever beam welding connection structure that reduces the influence of welding temperature on chemical anchor colloid, that is, first fixing the chemical anchor on the existing structural member with anchor colloid, then mechanically connecting the anchor plate with the cantilever beam section with the chemical anchor, and finally welding the cantilever beam section to the cantilever beam member.

[0008] The material of the existing structural components is reinforced concrete.

[0009] The anchor plate and cantilever beam are made of steel structure material.

[0010] The cantilever beam section and the anchor plate need to be connected by welding before the anchor plate is connected to the chemical anchor bolt.

[0011] The anchor holes on the anchor plate need to be opened after the chemical anchors are chemically anchored to the existing concrete structural components.

[0012] The cantilever beam section has a length of 400 mm.

[0013] During the welding process of the cantilever beam component and the cantilever beam section, a wet towel soaked in ice water should be wrapped on the cantilever beam section.

[0014] The advantages and positive effects of the present invention are as follows: by welding the cantilever beam section on the anchor plate in advance, it is avoided to directly weld the cantilever beam on the anchor plate that has been connected to the chemical anchor bolt, and when welding, a wet towel soaked in ice water is covered on the cantilever beam section, thereby greatly reducing the adverse effect of high temperature on the chemical anchor bolt colloid during welding, and also avoiding high temperature burns to the existing structural concrete. At the same time, because the existing components have dense steel bars inside, the chemical anchor bolts are fixed first, and then the anchor bolt holes are opened according to the positions of the chemical anchor bolts. This also avoids the conventional practice of first making holes on the anchor plate, and when the anchor bolts conflict with the steel bars inside the existing structural components, the positions are moved, resulting in the generation of useless anchor bolt holes. The above method is efficient, safe and reliable, and achieves greater social and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a side schematic diagram of the utility model;

[0016] Figure 2 It is a front schematic diagram of the present utility model.

[0017] In the figure: 1. existing structural member, 2. chemical anchor, 3. anchor plate, 4. cantilever beam member, 4-1. cantilever beam section, 4-2. cantilever beam; 5. connecting weld between cantilever beam section and anchor plate, 6. connecting weld between cantilever beam section and cantilever beam. DETAILED DESCRIPTION

[0018] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0019] See also Figure 1-2 A cantilever beam welding connection structure that reduces the effect of welding temperature on chemical anchor colloid. A chemical anchor 2 is fixed to an existing structural member 1 via anchor colloid. An anchor hole is opened on an anchor plate 3 according to the position of the chemical anchor 2. The anchor plate 3 is welded to a cantilever beam segment 4-1 via a cantilever beam segment-anchor plate connecting weld 5. The anchor plate 3 with the cantilever beam segment 4-1 welded thereto is mechanically connected to the chemical anchor. A wet towel soaked in ice water is wrapped around the cantilever beam segment 4-1. Then, the cantilever beam 4-2 is welded to the cantilever beam segment 4-1.

[0020] The above method achieves a reliable connection between a cantilever beam component and an existing structural component 1 while significantly reducing the adverse effects of welding temperature on the chemical anchor colloid. By pre-welding the cantilever beam segment to the anchor plate, direct welding of the cantilever beam to the anchor plate already connected to the chemical anchor is avoided. During welding, the cantilever beam segment is covered with a wet towel soaked in ice water, significantly reducing the adverse effects of high temperature on the chemical anchor colloid during welding and preventing high-temperature burns to the existing structural concrete. Furthermore, due to the dense reinforcement within the existing component, the chemical anchor is first fixed and then the anchor holes are opened according to the chemical anchor positions. This avoids the conventional practice of first drilling holes in the anchor plate, which can cause the anchor to shift when it conflicts with the reinforcement within the existing structural component, resulting in a waste anchor hole. This method provides a reference for the reliable connection of steel structural components to structural components using chemical anchors and welding, with significant social and economic benefits.

[0021] Although the preferred embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all fall within the scope of protection of the present invention.

Claims

1. A cantilever beam welding connection structure that reduces the effect of welding temperature on chemical anchor colloid, characterized by First, a chemical anchor is fixed on an existing structural member using anchor colloid, then an anchor plate with a cantilever beam section is mechanically connected to the chemical anchor, and finally the cantilever beam section is welded to the cantilever beam member.

2. A cantilever beam welding connection structure for reducing the effect of welding temperature on chemical anchor colloid according to claim 1, characterized in that: The material of the existing structural components is reinforced concrete.

3. The cantilever beam welding connection structure for reducing the effect of welding temperature on chemical anchor colloid according to claim 1, characterized in that: The anchor plate and cantilever beam are made of steel structure material.

4. The cantilever beam welding connection structure for reducing the effect of welding temperature on chemical anchor colloid according to claim 1, characterized in that: The cantilever beam section and the anchor plate need to be connected by welding before the anchor plate is connected to the chemical anchor bolt.

5. The cantilever beam welding connection structure for reducing the effect of welding temperature on chemical anchor colloid according to claim 1, characterized in that: The anchor holes on the anchor plate need to be opened after the chemical anchors are chemically anchored to the existing concrete structural components.

6. The cantilever beam welding connection structure for reducing the effect of welding temperature on chemical anchor colloid according to claim 1, characterized in that: The cantilever beam section has a length of 400 mm.

7. The cantilever beam welding connection structure for reducing the effect of welding temperature on chemical anchor colloid according to claim 1, characterized in that: During the welding process of the cantilever beam component and the cantilever beam section, a wet towel soaked in ice water should be wrapped on the cantilever beam section.

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